Fig. 2.

Correlation of serum analytes and their predictive value. Figure 2: Correlation of serum analytes and residual renal creatinine clearance (ClCR). a – Serum BTP and ClCR; b - Serum Cystatin C and ClCR. Receiver operating characteristic (ROC) curve for prediction of a creatinine clearance < 7 ml / min based on serum level of BTP and Cystatin C. c – ROC analysis for BTP; d – ROC analysis for Cystatin C. AUC (Area under the curve): BTP: 0.94; Cystatin C: 0.89